Automatic dialing telephone attachment



May 28, 1940 H. AARON ET A1.

AUTOMATIC DIALING TELEPHONE ATTACHMENT I 1 m. lv /TI R n a Y Q oar. E t NQ T i Pm N s m & l\|1!r 1% l l l@ w3 m Il l wl wmp 1mm A m M f L ||I, AM3 z -i 11IlmwlTfi I y -I{ Ti INM I fikwvm #..Liwhw TIVT 51W -l- N. mkg ,TQQ J m @A F Ww .M /7 V f w IIIh k o, @n w 5 Q M l ..nh ls. :iii Nq wm l l l -l l f @will k. m -l 1 w n .ws Wn mw v\\ kN Mw www May 28., 1940.

H. AARON er A1. A2,202,366

AUTOMATIC DIALING TELEPHONE ATTACHMENT Filed Oct. 10, 1936 6 Sheets-Sheevt 2 I INVENTOR. Hany Aaron and L/abn ammerslram May 2s, 1940.'

H. AARON :T A1. AUTOMATIC DIALING TELEPHQNE ATTACHMENT 6 Sheets-Sheet 3 -Filled oct. io, 193e l INVENTOR. 1562 y aran anni BY @lh f2@ m2.. .SQ

Z' 12 t :amers/ram Y ATTORNEY.

May 28, 1940. H. AARON x-:r A1. 2,2025366 AUTOMATIC DIALING TELEPHONE ATTACHMENT v Filed oct. l1o. 19ss s sheets-sheet 4 PS l ' INVENTOR. gary .Aron anni BY L/au Hlmmersmm @www May 2s, 1940.'

H. AARQN la-r AL T 2,202,366

AUTOMATIC DIALING TELEPHONE ATTACHMENT 6 Sheets-Sheet 5 Filed Oct. 10, 1956 May 28, 1940.y H, AARON E1- AL 2,202,366

AUTOMATIC DIALING TELEPHONE ATTACHMENT Filed 0G12. l0, 1936 6 Sheets-Sheet 6 INVENTOR. Harry aran am] ATTORNEY.

`Patented May 28, 1940 UNITED l s'TiiTlszs` AU'roMA'rlc mAmNG remnant; *Armonmaar Harry AaromNew York,A N. Y., and John' Hammerstrom, Bridgeport, Conn.; said' Hammerstrom assignor to said Aaron Application october 10.1936, serial No. 104,946

s calms.

This invention relates to 'an automatic dialing device, and more particularly to one which is portable and may be readily and detachably associated with a. conventional automatic dial tele= phone'. The invention still further relates to such a dialing devicewhich may be selectively operated by the user to automatically dial telephone call numbers selected by the user/*from a pre-established group of such telephone call l0 numbers.

Conventional automatic telephones are provided with dials, the successive selective rotation of which sets up electrical impulses in pre-established sequence to thereby actuate call number selecting mechanism relating to the speciiled telephone call number.

The dial of such conventional telephone is provided with a selected number of stations arranged on its periphery, usually ten in number, each $0 station corresponding to a letter or a number,

which, in a specific sequential arrangement, corresponds to a telephone call, number. Rotation of the dial, which is operatively connected to an impulse mechanism and which mechanism iunc.

tions by thesuccessive closing and opening of an electric circuit, Vto any selected station, sets up the number ofimpulses corresponding to that station. To dial a telephone number, the operator rotates Vthe dial successively to each letter or number station .in sequence corresponding to the combination comprising the telephone number, the dial, upon being released at each selected station,`spontaneously returning to its original position by spring actuated means. 'Ihe return movement'of the dial opens and closes an electrical circuit successively to thereby set up the number of impulses-relating to that particular station.

In certain commercial ofilces, such as those of bakeries, dairy companies, or like large organizations, the same telephone call numbers are dialed each day. For example, in large cities, in order to ascertain the requirements of its product for that day. it is usual for a dairy company each morning -to telephone its regular and -established customers, who may number hundreds or thousands. The dialing of a hundred or more telephone numbers from a regularly established list in a given period is tiresome and tedious work and, because ofthe human dimculty in successively memorizing or mechanically dialing so numerous a selection of telephone numbers, is attendant with errors in dialing which are time-consuming and costly.-

l5 Our invention contemplates the`provision of a portable attachment, compact in structure, which may-Ehe detachably yassociated with a conven" tional automatic dial telephone, and which on operation will selectively engage the-dial thereof,

to automatically operate the said dial in proper 5E sequence to correspond -to any telephone call number selected from a pre-established group of such numbers. Our invention iurther'contemplates the provision of means corresponding to a selected telel0 phone call number which may be readily and convenientlyinserted in or removed from the device, and ,which means actuate'the device mechanism to lnuence the selective actuation of a telephone call number selecting mechanism. l5

the provision of a device whichwill automatically 2s obtain' a telephone call number volitionally se-I lected from-a pre-established group of such call numbers.

Further objects of our invention will be clear l from the description which follows and from the 30 drawings wherein like reference characters refer to like parts throughout the several views and in which 1 Figure 1 is a front elevation of our automatic conventional automatic dial telephone.

Figure 2 is a. top plan rview of our automatic dialing Adevice with 'the enclosing casing and housing removed and disclosing. the motor and operating mechanism.

"Figure 3 is a side elevation looking toward the line 3 3 of Figure 2, with the dial engaging clutch actuating cams vpartially ybroken away.

Figure 4 is a top planview of the dial engaging clutch and operating gear, the-cover thereof be- 4B ing partially' broken away.

. Figure 5 -is a fragmentary cross'section taken along the line 5-5 oi Figure 2.

Figure 6 is a view similar to Figure 5, but with the motor switch disconnecting means in position 50 l just prior to disconnecting :the switch.

Figure 7 is a fragmentary cross section taken i Aalong the line l-v-l of Figure 3.

Figure 8 is a fragmentary plan viewv locking toward the line oi' Figure 3 and showing dialing device in operative association with a 359 in dotted lines v`the dial engaging clutch in dial engaging position.

Figure 9 is a section taken on the line 9-9 of Figure 8.

Figure 10 is a cross section taken along the `line III- I0 of Figure 1.

Figure 11 is a profile view of a dial actuating cam.

Figure 12 is a rear elevational view of the dial engaging clutch and its operating mechanism.

Figure 13 is a side elevational -iew thereof.

Referring now to the drawings, the preferred embodiment of our invention is provided with the operative mechanism enclosing casing I0, the cover plate I2 of which provides a platform to support a conventional automatic dial telephone hand set I4 in operative association with the dial engaging and driving friction clutch 22.

Extending from the casing and detachably secured thereto in any suitable manner as by the lock screw I'I to thereby permit ready access to the operative parts is the housing I6 which encloses and houses a pre-established group of cam Wheels arranged to operate the dev ice to thereby selectively actuate the telephone call number selecting mechanism.

In operation, the telephone hand set is arranged on the cover plate and held thereon in any suitable manner as, for example, by means of the spring influenced rubbercovered lugs I8 disposed around the periphery of the platform and which are urged against the base I9 of the telephone to thereby firmly hold it in position. The lugs are so arranged on the cover that the telephone dial is properly positioned relatively to the friction clutch for operative cooperation therewith upon arranging the telephone on the platform.

It will, of course, be understood that the particular type of telephone shown on the drawings is for purposes of illustration only and that our novel device may be associated with any type of telephone hand set.

The invention contemplates the provision of means which will automatically engage the telephone dial 20 and selectively rotate it to each of a series of stations in proper sequence corresponding to the desired telephone call number. Such means are embodied in the rotating Wheel friction clutch 22, which is normally stationary and disposed disengaged from the dial in the position illustrated in Figures 1 and 8. In automatically dialing any number, the clutch is rotated and successively and in proper sequence swung back and forth about the countershaft 24 as a pivot into operative engagement with and disengagement from the dial, which enters the ready replacement thereof,

groove 26 arranged on the rim of the clutch, by the selectively cam actuated mechanism which will in detail be described below.

The dial engaging groove is preferably formed on the periphery of the tire 28, which is detachably arranged on the wheel in order to permit and is constructed from any frictionable material such as rubber.

As the rotating clutch engages the telephone dial upon being swung about the shaft 24, it rotates the dial to the proper selected station. Upon the dial reaching this position, the clutch is swung away from the dial, thereby releasing the dial and permitting it to return to its normal position, thereby causing the required impulses corresponding to that selected station to be set up in the telephone call number selecting mechanism.

This operation is repeated and the dial rotated in proper station sequence until the telephone call number is automatically dialed after which the friction clutch is returned to its normal stationary position disengaged from the dial.

It will, of course, be understoodv that, if desired. our novel selective actuating mechanism may be connected directly to the telephone call number selecting mechanism itself, thereby eliminating the wheel friction clutch and the dial.

The working parts are preferably operated by a conventional electric motor 30, of any suitable type, which is housed in the casing on the supports 32 upstanding from the base 34, and which is connected to any convenient source of electric current by the cord 35. The motor, which need not be described in detail here since such details, per se, constitute no part of the present invention, may be secured to the supports in any convenient manner as by means of the screw bolts 36.

Power from the motor to drive the'working parts of the device, namely the rotating wheel friction clutch and the clutch selectively actuating mechanism, is transmitted through the transmission-gearing, which likewise is supported in the .base of the casing.

'I he transmission gearing housing or frame comprises the walls 38 and 40, which are preferably cut away at their centre portions to reduce weight and to permit the worm wheel 42 to be disposed therebetween.

It will be understood that the transmission gear train described herein is primarily arranged to operate the specific friction clutch and clutch selectively actuating mechanism disclosed, which may be arranged relatively to each other in a variety of ways, depending on many factors such as the specific construction of these parts, space requirements to be allotted thereto, and the like land, therefore, serves for purposes of illustration only since it and the specific arrangement of the parts may be varied without changing the scope of the invention herein set forth.

The motor shaft 44 is operatively connected to the transmission main driving shaft 46 in any suitable manner as by means of the toothed clutch 48 (see Figure 2).

Arranged on the driving shaft is a worm gear 5% which operatively meshes with the worm wheel 42 on the'substantially vertical countershaft 24 which is journaled in the bearing blocks 52 and 54. The bearing blocks are housed in the frame and secured to the cam shaft support 58 of the frame wall by the plate 58 which is held thereon in any suitable manner, or the like. l

It will be understood that since the dial of the conventional telephone set is disposed at an angle to the horizontal, the countershaft, about which the rotating wheel clutch is swingable, is therefore arranged to extend upwardly at such an angle to the vertical that the wheel clutch will bedisposed outwardly of the casing parallel to and in the same horizontal plane as the dial.

The lengthof the countershaft is such that the groove of the friction clutch of the dial when the clutch countershaft.

It will be apparent that 'upon arranging the will engage the rim is swung about the telephone hand set on the platform, the dial and disposed adjacent to as by screw bolts, rivets clutch driving spur gear 60 75 The friction clutch and associated driven gear are supported on the rocker arm 10, which will be described in greater detail hereinbelow, and together rotate on the shaft 12, which is secured in operative cooperation with parts to the rocker arm by the end cap 14 and the nut 16 which is arranged on the threaded end 16 of the bearing shaft. (See Figures 10, 12 and 13.)

Injorder to prevent exposure ,of the friction clutch and operative gear, we arrange thereover the protective cover 19, which is slotted to frictionally receive the end cap of the clutch shaft to be thereby secured thereon.

It will be apparent that operation of the electric motor4 will, by means of the transmission gearing, impart -rotation of the wheel friction clutch about the shaft 12 in a counterclockwise direction, thereby rotating -the telephone dial when it is brought into engagement therewith,

the dial rotatingV` in a clockwise direction.

In order, therefore, tov automatically dial a telephone call number, it becomes necessary to provide a mechanism which will throw the fricz tion clutch into engagement with the dial and thereby permit the dial to return to its normall position and which will successively repeat such "operations to thereby in proper sequence rotate the dial successively to each of the remainder of the stations of the call number.

Referring now to the mechanism for swinging the wheel friction clutch into and out of engagement with the dial', the rocker arm 10 is arranged on the sleeve` 80 extending therefrom through which the vertical countershaft extends and in which it is rotatably journaled. (See Figure 10.) The sleeve itself is pivotally journaled in the bearing block t so that it is rockable thereabout.

Extending from the sleeve and xcd thereto by fmeans of the cap screw 02 in the collar 6 4 is the sleeve actuating arm 86, which rocks the sleeve 00 about the shaft 20 and through it the rocker arm 10. (See Figures 7, 8 and 12.)

Arranged on the support 56 is the block 08 in 1 which is fixed the pivot shaft 90 about which the bell crank lever 92 is swingable.

Fixed to the substantially horizontal arm 94 of the bell crank lever 92 is the cam actuated arm 96 which is pivotally arranged on the fixed pivot shaft-90.

Extending from the arm 96 is theratchet bar 98, which is thereby adapted to be rocked about the pivot shaft in a manner to bedescribed.

The telephone number selecting indicator frame |00 is movably secured to the ratchet bar, vthe beveled guide |02 slidably held in a cooperating channel on the rack and carries the index finger |04," (see Figures ,1 and 3) which is arranged above and adjacent to the index scale |05.

Extending from the indicator frame and r-A tatably arranged therein is the Shaft |06 on the inner end of which is secured the pinion |01, in engagement with the rack |08 of the bar and on the outer end of which is the knurled knob |09.

It will be apparent that the index finger may be moved laterally on the bar to thereby dispose it adjacent any selected position on the scale by the proper rotation of the knob. 'It will be further 'apparent that the bar and index finger structure is arranged to` be swung back and forthabout the pivot shaft in the directions indi- .cated by the arrows in Figures 3 and 5.

Extending underneath the indicator frame is a cam follower which, upon depressing the indicator frame in the direction indicated by the arrow in Figure 3 swings the bar and its associated members about the pivot shaft thereby bringing the cam follower into engagement with the depressed surface of 'a selected rocker cam wheel ||2 corresponding to a selected tele. phone number.

The iiat spring ||4, .the movable end of which is secured to the pin ||6 on the lower end of the arm ||0 of the rockable bell crank lever and the fixed end of which is secured to the pin .|20 of the wall 30, normally maintains the cam follower against the face of the cam during operation of the device.

Depression of the indicating frame against the cam wheel closes the motor electrical circuit in a manner that will be described in greater detail hereinbelow and simultaneously disposes the friction clutch into operative engagement with the telephone dial. V'I'his is accomplished by means of the levers and links heretofore referred to, the operation of which will now be described.

The substantially vertical arm IIB of the bell crank lever has fixed thereto the link pin |22 which is arranged in the somewhat elongated slot |24 of the ear |26 depending from the sleeve actuating arm 86. Movement of the substantially vertical arm ||0 in the direction indicated by the arrow in Figure 13 swings the sleeve actuating arm. in the direction indicated by the arrow in Figure 8, thereby swinging the rocker armand its associated friction clutch to the left into operative engagement with the telephone dial. The arc required to be described lby the rocker arm is very slight, thereby permitting the lateral rocking motion of the bell crank lever arm to be translated into the rotary rocking motionrof the sleeve actuating arm by means of the link pin and slot arrangement.

The invention contemplates the provision of means for rotating the friction clutch in such operative engagement with the dial and maintaining it in engagement until the dial is rotated to the desired stationfat which position it is contemplated that the friction cluch shall be released from'operative engagement with the dial.

The invention further contemplates maintaining the friction clutch in such disengaged position until the dial returns to its normal position, at which time the friction clutch is to be returned into operative engagement with the dial which is thereby to be again rotated to the next station forming part of the call number sequence.

It is, therefore, contemplated to arrange such means so as to provide the successive sequential measured engagement and disengagement ofthe friction clutch with the telephone dial which will result in the automatic dialing of a selected call rocker cam wheel H2 fixedl on the cam shaft .|38 is iixedly secured to the countershaft intermediate the bearing block 52 and the rocker arm sleeve 8D `and meshes with the worm wheel |32 secured to the cam shaft. (See Figures 3 and 10.)

The cam shaft is rotatably arranged in suitable bearing journals in the supports 56 and |34 extending upwardly from the walls of the transmission gearing frame. A.collar |36 is secured to the shaft by the set screw |38 and together with the spacer |48 inhibits lateral motion of the cam shaft in the frame.

It will be apparent that any number of such cam wheels, each corresponding to a particular telephone call number, may be arranged on that part |42 of the cam shaft extending from the side of the casing, the only limitation being that of dimensional restriction.

The profile of each of such cam wheels 1s alternatively provided with a plurality of depressed cam surfaces |44 and cam noses |46, the purpose of which will become apparent. (See Figure l1.)

" It will be understood that as long as the cam follower is urged by the flat spring against a depressed cam. surface, the friction clutch is correspondingly held in engagement with the telephone dial. As the cam shaft is rotated in a counterclockwiseV direction by the motor, the cam follower is held against the profile cam surface by the flat spring. The circumferential length of each depressed surface on the cam wheel corresponds to the circumferential length Y of travel of the telephone dial to dial a particular number or letter. The circumferential length of a nose on the cam will be such as to permit a length of time to elapse only sufficient to permit the dial to return to its normal position after its rotation to the selected station. The exact dimension will depend upon the gear ratios and the diameters of cam wheel and friction clutch used.

It will be apparent then that such a cam may be provided for each! selected qtelephone call number by varranging on the profile of the wheel a series of depressed surfaces of measured lengths each respectively corresponding to the circumferential length from the telephone dial finger stop of the particular station to be dialed, the said depressed surfaces separated by cam noses of measured lengths each respectively sufficient to permit the elapse of the period of time required for the dial to return to its normal position after rotation thereof to the preceding station dialed. For example, referring to Figure 11, the assumed telephone number combination is BDAF. In operation, the cam follower is depressed and held by the spring against the depressed surface |44 of the cam adjacent the letter B in Figure 1l, which is of length sufficient to permit the telephone dial to be rotated from the dial station B to the finger stop |48 on the telephone hand set. As the cam follower engages the beveled edge |50 of the nose of the rotating cam, the cam follower is lifted against thetension of the fiat spring, thereby disengaging the friction clutch from the dial. The height of the nose is just sufiicient to permit disengagement of the clutch; it not being intended to return-the clutch to its full normal position, for reasons which will be indicated hereinbelow. The circumferential length of the nose |46 is at least sufficient to permit the full return of .scribed in detail', are

the dial to its normal stationary position. As the cam is rotated further, the cam follower engages the rearward beveled edge |52 of the cam nose, the flat spring urging it downward against the depressed portion corresponding to the letter D of Figure 11. The friction clutch is thereby again urged into engagement with the telephone dial, the vcircumferential length f the depressed surface D corresponding to the circumferential length of the station D to the finger stop |48. The friction clutch is held in operative engagement with the dial which is thereby rotated to the position corresponding to the station D, upon completion of which rotation the cam follower engages the nose |54 to thereby again release the dial. This operation is repeated until the stations BDAF in the proper sequence have beendialed, afterA which the cam follower engages the last cam nose |56 to thereby release the friction clutch, the number having been dialed. Means, which will be further deprovided for stopping operation of the motor after the number has been dialed.

4In operation, a plurality of cam wheels, each Wheel corresponding to a particular telephone call number of the pre-established group of frequently dialed call numbers, are detachably arranged on the cam shaft which extends through the aperture |58 arranged centrally of the cams and securely held thereon by the lock nut |68 which engages the threaded end |62 of the cam shaft. Washers |69 are interspaced between the cam wheels, which frictionally hold the wheels on the shaft.

'Ihe rocker cam wheels may be arranged on the cam shaft in any desired sequence, provided their exact position thereon is noted. 'I'he index scale |05 has provided thereon reproductions of the telephone numbers comprising the group corresponding to the cam wheel which is arranged thereunder and which it designates. If desired, such reproductions may be replaced by indicia, each item of which corresponds to a selected cam wheel and, therefore, to a selected telephone number and an index code made of the indicia.

The cam wheels are so arranged on the shaft relatively to the scale that, upon moving the index iinger above any number or item of the scale, the cam follower will be placed in operative position adjacent the cam wheel corresponding to the selected item on number on the dial.

In order to assist in positioning the index finger and associated cam follower relatively to the cam wheel, the resilient at pawls |64 are arranged extending from each side of the frame and engag the racklike member |66, thereby inhibiting free lateral movement of the frame on the bar.

In operation, after the index finger has been moved along the rack to a position adjacent the indicia corresponding to the selected telephone number, it is desired to switch the motor on simultaneously with depressing the cam followerY into operative engagement with the initial depressed surface ofthe cam Wheel. Our description will now be concerned with such means and the means for shutting o the motor so that the initial depressed surface of any camlwheel, corresponding to the first station of telephone number combination of that cam wheel, will be spontaneously positioned adjacent the index nger in proper position to commence the dialing cycle again.

Referring now particularly to Figures 5 and 6, the toggle switch |61 of the conventional design for opening and closing the motor circuit is secured in the casing to the base thereof in any suitable manner. The substantially vertical arm |I8 of the bell crank lever is pivotally connected to the link |68 by means of the pin |10. The lower end of the said link is fixed to the pin |12, which pinwis pivoted in the horizontal link |14. The outer end of the horizontal link is pivotally connected to the switch actuating rocker arm |16 which is pivoted intermediate its ends to the motor switch frame |18. The movable and cylindrical switch electrode is carried be-y tween the pin |82 arranged on the outer end of the rocker arm and the curvilinear upper surface |84 of theswitch frame. The pin is adapted to enter the slot |88 on the electrode frame |90, an expanding spring |92 urging the electrode away from the pin. As the substantially vertical arm ||8 is rocked in the direction indicated by the arrow in Figure 13 on depressing the indicator frame, the links just described swing the switch rocker arm about its pivot forcing the movable electrode from the position shown in dotted lines in Figure 3 to' assumegthe position shown in full lines in said figure and thereby into operative contact with the fixed electrode |94 of the toggle switch, thereby completing the motor cir-4 cuit through the lead wires |36 and |98 which are operatively connected to the motor and the motor electrical circuit.

In order for the movable electrode to be forced.

into contact with the fixed electrode, the rocker arm pin is required to be urged completely home in the sl'ot, thereby compressing the spring. This position is reached when the rocker arm is in a substantially vertical position.

Further motion of the rocker arm about its pivot toward the left of the switch frame, as viewed in Figure 3, urges the cylindrical movable electrode to snap along the curved surface of the frame towardy and into contact with the xed electrode. It will be apparent that considerable motion of the connecting linkage will be obtained before the electrode is snapped to open or close the switch. As pointed out hereinabove, theheight of the cam nose is sumcient only topermit disengagement of the clutch, and by reason of the play permitted in the connecting linkage the horizontal link |18 may be returned a considerable distance in the direction of the arrow shown in Figure 3 by the action of such cam nose without disengaging the switch electrodes, such movement of the horizontal link being taken up by the movement ofthe pin in the slot ofthe electrode frame.

It will be apparent, therefore, that the cam nose in disengaging the friction wheel will not disconnect the motor switch. Operative disconnection of the switch is accomplished by thev cooperating detents 200 and 202 which are arranged respectively on the cam shaft and switch lever actuating link 204.

The detents normally assume -the relative positions shown in Figure 5 when the elements of the device are disposedv in normal inoperative stationary position. The detent 202 is rockably The lower end of the pivoted link 204 is ,secured to the link |12. 'The fiat spring 206. .the fixed end of which is secured to the pin |12 and tii'e movable end 2| 0 of which is secured to the detent 202, urges the said detent against the cam shaft detent 200.

As the cam shaft and asociated detent are rotated in the direction indicated by the arr W in Figure 5, the beveled nose 281 of the detent 2 2 is urged against the cylindrical surface 268 the detent 200 by the fiat spring 2". The detents are so-positioned relatively to each other and any cam wheel that they assume the positi n shown in Figure 5 when the cam follower'4 is n contact with the rearward beveled edgel2|2- of the last cam nose I 56 of Aany cam wheel. l

It will be apparent, therefore, that as the cain shaft detent is rotated during the operation bf The various members and r`detents-are posiy tioned relatively to each other so that the motor switch will be disconnected'just whenthe nose 2|6 of the cam shaft detent passes vthe nose 261 of the switchv leveractuatinglink detent. 1.,

1 It will be-apparent, therefore, that the motor switch will always be disconnected,l and the inotor stopped so thateach cam wheel spontaneously assumes its normal stationary starting' sition, the switch actuating detents assuming hev position illustratedin Figure 5. The inertiaof the gears and moving parts of the device serves to stop the motion of the respective parts of the device instantaneously the motor is disconnected,

inhibiting any continued motion thereof. l

It will be apparent that we have provided means which will switch the operating motorv arm upon moving the cam follower into operative engagement with the cam wheel and means for spontaneously shutting of! the operatingxiiotor and positioning the cam follower relatively to any cam wheel in proper position to commence the dialing cycle again,

It will be seen that to operate the device it is only necessary to depress the cam follower into engagement with a selected Vcam wheel, the inotor thereby being started to drive Athe friction clutch and cam wheel, which operate to antematically and successively in proper sequence-l rotate the telephone dial yor influence any otherassociated device setting up impulses in the telephone call number selecting mechanism to btain the desired call number, the device spontaneously stopping its operation and returning the parts to their original stationary related positions after the telephone call number -has been dialed or the impulses in the call number selecting mechanism set up. y

It will 'be further apparent that we have provided an automatic telephone dialing device which'is compact, portable, and which maybe readily, conveniently and det'achably associated.

with a conventional automatic dial ltelephone hand set.

It will be further apparent that we have provided such a dialing device which may be 'selec-l tivelyv operated by the user to automatically dial telephone call numbers selected by the user from a pre-established group of such telephone call numbers.

It is understood that the particular embodiment described above is intended to be merely illustrative and not limitative of the invention, since it is obvious that the invention may be effected by apparatus arranged in many other different ways, within the scope of the appended claims in which the intent is to set forth all the novelty over the prior art.

We claim:

1. Automatic dialing apparatus for association witha telephone instrument having aV conventional rotary dialing disc comprising means for supporting the telephone instrument in fixed position upon the apparatus, a`rotating friction disc normally disengaged from the dialing disc and adapted to progressively engage the edge of the dial disc to turn the same, pivoted supporting means for the said dial engaging disc, cam means adapted to actuate said pivoted support to swing said dial disc engaging disc in and out of engagement with the said dial disc, and means to continuously rotate the said dial disc engaging disc during the dialing operation.

2. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing disc comprising a rotating friction disc normally disengaged from the dialing disc adapted to progressivelylengage the edge of the dial disc to turn the same, pivoted supporting means for the said dial engaging disc, cam means adapted to actuate said pivoted support to swing said dial disc engaging disc in and out of engagement with the said dial disc, and means to continuously rotate the said dial disc engaging disc during the dialing operation.

3. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing dlsc comprising means for supporting the telephone instrument in fixed position, a rotary shaft positioned adjacent the said instrument supporting means, dial disc engaging rotating friction disc'normally disengaged. from the dialing disc and in rotary engagement with the said shaft and adapted to progressively and rotatably engage the edge of the dial disc, means for supporting thesaid dial disc engaging disc swingably mounted adjacent the said shaft in position to continuously maintain the said shaft and dial disc engaging disc in rotary engagement, rotary cam' supporting means adjacent the said shaft, cam followingmeans pivotally mounted adjacent the said cam supporting means and in engagement with the swingable supporting means and adapted to be influenced by a cam on the cam supporting means to swing said swingable supporting means to bring the said dial disc engaging disc successively in and out of engagement with the dial disc.

4. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing disc comprising means for supporting the telephone instrument in xed position,I a rotary shaft positioned adjacent the said instrument supporting means, dial disc engaging rotating friction disc normally disengaged fromsaid dialing disc and in rotary engagement with the said shaft and adapted to progressively and rotatably engage the edge of the dial disc, means for supporting the said dial disc engaging disc swingably mounted adjacent the said shaft in position to continuously maintain the said shaft and dial disc engaging disc in rotary engagement, a cam supporting shaft in rotary engagement with the said rotary shaft, cam following means pivotally mounted adjacent Ithe said cam supporting shaft, and in lengagement with` the said supporting means and adapted to be influenced by a cam mounted on the' cam supporting means to-swing said supporting means to bring the said dial disc engaging disc inA and out of engagement with the dial disc.

5. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing disc comprising means for supporting the telephone instrument in fixed position, a rotary shaft positioned adjacent the said instrument supporting means, dial disc engag- .ing rotating friction disc normally disengaged mounted adjacent the said cam supporting means and in engagement with the said supporting means and adapted to be influenced by a cam to swing said supporting means to bring the said dial disc engaging disc in and out of engagement with the dial disc, and means for simultaneously rotating the said rotary shaft and the said cam supporting shaft.

6. Automatic dialing apparatus for association with a telephone instrument havinga conventional rotary dialing disc comprising means for supporting the telephone instrument in fixed position, a rotary shaft positioned adjacent the said instrument supporting means, dial disc engaging rotating friction disc normally disengaged from said dialing disc and in rotary engagement with the said shaft and adapted to progressvely and rotatably engage the edge of the dial disc, means for supporting the said dialdisc-engaging disc swingably mounted adjacent the said shaft in position to continuously maintain the said shaft and dial-disc-engaging disc in rotary engagement, a cam supporting shaft in rotary engagement with the said rotary shaft, cam following means pivotally and slidably mounted adjacent the said cam supporting shaft, e

and in engagement with the said swingable, supporting means and adapted to be influenced byv a cam mounted on the cam supporting shaft to swing said swingable supporting means to bring the said dial disc engaging disc successively in and out of engagement with the dial disc, and means for rotating the said rotary shaft.

7. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing disc comprising means for supporting the telephone instrument in xed position, a rotary shaft positioned adjacent the said instrument supporting means, dial disc engaging rotating friction disc normally disengaged from said dialing disc and in rotary engagement with the said shaft and adapted to progressively and rotatably engage the edge of the dial disc, means for supporting the said dial disc engaging disc swingably mounted adjacent the said shaft in position to continuously maintain the said shaft and dial disc engaging disc in rotary engagement, a cam supporting shaft in rotary engagement with the said rotary shaft, cam following means pivotally and slidably mounted adjacent -means for supporting the said dial disc engaging the said cam supporting shaft, and in engagement with the said supporting lmeans and adapted to be influenced by a cam mounted on the cam supporting means to swing said supporting means to bring the said dial disc engaging disc in and out of engagement withthe dial disc.

8. Automatic dialing apparatus for association with a telephone instrument having a conventional rotary dialing disc comprising means for supporting the telephone instrument in fixed po-v sition, a rotary shaft positioned adjacent the said instrument supporting means, dial disc engaging rotating friction disc normally disengaged from said dialing disc and in rotary engagement with the said shaft and adapted to progressively and rotatably engage the edge of the dial disc.

disc swingably mounted adjacent the said shaft and dial disc engaging disc in rotary engagement,

a cam supporting shaft in rotary engagement with the said rotary shaft, cam following means pivotaliy and slidably mounted adjacent the said cam supporting shaft, and in engagement with the said swingable supporting means and adapted to be inuenced by a series of cams mounted on the cam supporting shaft to swing said swingable supporting means to bring the said dial disc engaging disc successively in and out of engagement with the dial disc, and means for rotating the said rotary shaft.

HARRY AARON. JOHN TROM. 

